Improvement in bed-bottoms



'5. s. HELD'.`

Improvement in Bed-Bottoms No. 131,158. Patented sep. 1o, 1812.

UNITED STATES PATENT OEE-ICE.

EDWIN S. FIELD, OF HARTFORD, CONNECTICUT, ASSIGNOR OF ONE-HALF VHIS RIGHT TO NORMAN SMITH, OF SAME PLACE.

IMPROVEMENT IN BiED-BOTTOMS.

Specification forming part of Letters Patent No. 131,158, dated September l0, 1872.

SPECIFICATION.

To all 'whom it may concern:

Be it known that II, EDWIN S. FIELD, of Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Bed-Bottoms; and I do hereby declare that the following is a full, clear, and exact description thereof, whereby a person skilled in the art can make and use the same, reference being had to the accompanying drawing and to the letters of reference marked thereon.

Like letters in the lignres indicate the same parts.

My invention relates to that class of bedbottoms which are composed of wire links suspended by springs from the four sides of a frame; it consists in a novel manner of connecting the links so as to make the fabric yielding in all directions; and, also, in constructing the bed-bottom with an unyielding tie through the middle from head to foot. My invention has for its object the formation of a bed which shall not sag in the middle, as is usual with bed-bottoms which are suspended from the ends and sides of the frame. This is accomplished by making the web of the bed flexible and yielding, so as to be depressed by any pressure or weight placed upon it, except through the middle, where it is supported and given additional stitlness by the rigid and unyielding chain or series of links passingfrom head to foot.

In the accompanying drawing, Figure l is a top view of my improved bed-bottom. Fig. 2 is a side view of the same.

a b e d are the four sides of the frame upon which the web is stretched. s s s s arespiral springs between the web and frame, to give elasticity, as is common in spring bed-bottoms.

They may be attached in any/ordinary manner. e e are quadrilateral curved-sided links, capable of being stretched in the direction of either diagonal. These form a chain by themselves across the bed, but are longitudinally connected by the straight links f. The links e are made by bending a steel or other suitable wire into the shape shown in the drawing. The two free ends are bent into hooks and hooked into the nearest angle of the next link toward the middle. hook into the small round link of the rigid chain, as shown in the drawing. The sides ot' e are curved inward in order to make the angles more acute, and thereby prevent any displacement of the links under severe diagonal strains. The links g and the connecting-rings h, form an unyielding chain through the middle of thefabric. The links are hooked into the rings in the ordinary manner.

The operation of my invention is such that when the bed is occupied by two persons the middle is not depressed so as to cause them to roll together; but that part is sustained and supported by the unyielding chain g h, so that each side acts independently, and makes a flatter and evener surface across the whole. bed than is usually' the case with this class ot' bed-bottoms. j

Claim.

Vhat I claim as my invention is- The inextcnsible leent-ral chain g h, in combination with an elastic bed-bottom, constructedsubstantially as and for the purpose herein described. e

EDWIN S. FIELD.

Witnesses:

THEO. G. ELLIS, BEN. A. OooKE.

At the middle of the bed they 

